CN107133870A - Electric power spot exchange Security Checking method based on cycle static analysis in 30 second - Google Patents

Electric power spot exchange Security Checking method based on cycle static analysis in 30 second Download PDF

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Publication number
CN107133870A
CN107133870A CN201710188976.XA CN201710188976A CN107133870A CN 107133870 A CN107133870 A CN 107133870A CN 201710188976 A CN201710188976 A CN 201710188976A CN 107133870 A CN107133870 A CN 107133870A
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data
power
network
analysis
line
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CN107133870B (en
Inventor
曾辉
李铁
唐俊刺
何晓洋
金晓明
张涛
孙文涛
姜枫
张强
张建
崔岱
梁晓赫
孙晨光
张宇时
冯占稳
王超
朱伟峰
詹克明
许小鹏
李典阳
王印
王刚
刘芮彤
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State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Electric Power Research Institute of State Grid Liaoning Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Electric Power Research Institute of State Grid Liaoning Electric Power Co Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q40/00Finance; Insurance; Tax strategies; Processing of corporate or income taxes
    • G06Q40/04Exchange, e.g. stocks, commodities, derivatives or currency exchange
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06Electricity, gas or water supply
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Abstract

The present invention relates to a kind of electric power spot exchange Security Checking method based on cycle static analysis in 30 second, power regulation center receives spot exchange data that electricity transaction department sends and carries out safety on line analyze data preparation first, then regulation and control center carries out static security analysis, and finally regulation and control center provides trade center and surely controls check result and assistant service strategy online.The safety on line analysis ability of power network can not only be lifted, the quick change of electric power spot exchange can be also successfully managed, safe and stable operation guarantee is provided for China's Power Market Development, the coordinating and unifying that electric power netting safe running and market are operated in order is realized.

Description

Electric power spot exchange Security Checking method based on cycle static analysis in 30 second
Technical field
The invention belongs to intelligent grid scheduling field field, a kind of electricity based on cycle static analysis in 30 second is directed primarily to Power spot exchange Security Checking method.
Background technology
During " 12 ", national grid has been built up using " three vertical three is horizontal " extra-high voltage grid substantially, as bulk transmission grid, is Voltage class highest, transmission capacity are maximum in the world, technical merit is most advanced, the operation characteristic most complicated big electricity of alternating current-direct current series-parallel connection Net.The propulsion built with extra-high voltage grid, and a large amount of power electronic elements applications such as direct current transportation, FACTS, wind-powered electricity generation and light Volt new energy power supply is accessed on a large scale, and the operating pressure brought constantly increases, and safety and stability level is mutually restricted, resource optimization profit With particularly thorny with safety problem.The traditional method that operation of power networks is arranged, is increasingly difficult in adapt to following extra-high voltage bulk power grid fortune The need for row, it is difficult to adapt to increasingly sophisticated changeable operating provisions, it is difficult to adapt to the sharp increase of the power system operating mode amount of arranging work. And " 13 " during the transregional spot exchange of electric power will be in full swing, for alleviate abandon water, abandon wind, abandon light the problems such as, national grid Regenerative resource more than needed area spot market rule transprovincially has been formulated, has directly resulted in and is sent using economic interests as the transregional transaction being oriented to Hold start-up mode, trend, power network static and transient stability mutation.Transprovincially area in a few days merchandise need satisfaction send receiving end power network and across Provinces and regions channel security constraint, market clearing wants closed loop to consider power system security constraints condition, therefore power dispatching station will be carried out conscientiously Row transaction security checks responsibility, earnestly implements trading program, ensures Real-time Balancing and system safety, is needed before trading scheme is implemented Dispatching of power netwoks department is wanted to carry out Security Checking and provide his feelings such as Network congestion, out-of-limit after assistant service decision-making, Security Checking Condition and assistant service decision-making return to trade center in time, and trade center changes transaction content according to the suggestion of traffic department, complete Into process of exchange.
This patent carries out improving lifting for D5000 safety on line analytic function, carries out based on 30 second cycle static security The electric power spot exchange Security Checking of analysis.The safety on line analysis ability of power network can not only be lifted, electric power can be also successfully managed The quick change of spot exchange, safe and stable operation guarantee is provided for China's Power Market Development, realize electric power netting safe running and The coordinating and unifying that market is operated in order.
The content of the invention
Goal of the invention:
The present invention carried out improving lifting for D5000 safety on line analytic function, it is proposed that based on cycle static analysis in 30 second Electric power spot exchange Security Checking method, can not only lift the safety on line analysis ability of power network, can also successfully manage electric power and show The quick change of barter deal, provides safe and stable operation guarantee for China's Power Market Development, realizes electric power netting safe running and city The coordinating and unifying that field is operated in order.
Technical scheme:
A kind of electric power spot exchange Security Checking method based on cycle static analysis in 30 second, first power regulation center receive electricity The power transaction spot exchange data that send of department simultaneously carry out safety on line analyze data preparation, then regulate and control center and carry out static peace Complete analysis, finally regulates and controls center and provides trade center steady control check result and assistant service strategy online.
The electric power spot exchange Security Checking method based on cycle static analysis in 30 second, is comprised the following steps that:
(1), regulation and control center receive spot exchange data
In a few days market reopens after a cessation of business daily for area's spot exchange transprovincially, tissue regenerative resource in a few days increment merchandise, 15 minutes be one when Section, whole day point 0:15-8:00,8:15-12:00,12:15-16:00,16:15-20:00,20:15-24:00 5 transaction section groups Knit, reopened after a cessation of business within 2 hours before each transaction section;Proxima luce (prox. luc) 17:Before 00, sending end, which is saved, adjusts dispatching desk tissue renewable energy power generation enterprise inside the province Industry declares next day in a few days market bidding price, and five transaction sections, renewable energy power generation enterprise reports one respectively in each transaction section Individual single price;Receiving end, which is saved, adjusts dispatching desk to declare next day in a few days day market competitive bidding valency, five transaction sections, renewable energy power generation enterprise Industry reports a single price respectively in each transaction section, and all pricing informations are sealed in Guo Tiao centers transaction platform;
First 150 minutes of formal transaction, Guo Tiao centers verification closes on transaction section and send receiving end purchase sale of electricity valency price differential and transregional passage available Ability to transmit electricity, sells electricity price lattice or transregional passage and can not use transmission of electricity when receiving end saves tune and declares power purchase price and save tune less than sending end and declare During ability, close on transaction section and do not reopen after a cessation of business;Preceding 120 minutes of formal transaction, such as closes on section of merchandising and reopens after a cessation of business, Guo Tiao centers, branch center to Province readjusts the distribution that cloth is transregional, transprovincially passage available transmission capacity;Renewable energy power generation enterprise generates electricity according to the residue in trading session Ability, declares the generating curve in a few days respectively closing on transaction section;Now, save and adjust D5000 systems receiving countries to adjust issue transregional, transprovincially The data messages such as passage available transmission capacity, generating curve and quotation;
(2), static safety on line check data prepares
To realize using and splice in the automatic of line computation data for different control centres, it is necessary first to set up device name and its The automatic mapping of attribute;General principle is:According to on-line/off-line device name, annexation, numbering, component parameters and people The information of work customization is formed dynamically various kinds of equipment mapping table, supports reflecting between multi-to-multi mapping, support different type equipment Penetrate;
Under current power system running pattern, multi-source data is mainly made up of off-line data and online data;In line computation number According to the electric network composition, device parameter and operation information for mainly containing power system major network, certain can relatively accurately be described The running status of moment power system major network;Off-line data contains relatively complete typical electric network composition, and grid equipment Model and parameter data, be adapted in detail, in depth analyze power network physical characteristic;Power network in line computation data and offline Data are the descriptions to same power system, but carrier due to modeling, purpose are different, and modeling process is relatively independent to wait former Cause, forms two sets of data for describing power system from different perspectives;
According to the actual conditions and rule of power network, the method for the dynamic and intelligent mapping policy of use is as follows:
1)Using plant stand as the dynamic device mapping of basic mapping unit;
2)The technology for being named as core with the standard of plant stand and equipment is used to realize dynamic mapping;Mainly from plant stand title, equipment Title carries out dynamic mapping;With reference to following rule:
Plant stand title is same or similar;It is current online main using scheduling name, and off-line data occupation mode is named;
Device name sequence number is same or similar;Dispatch name and the device numbering of offline title are basically identical;
Mapped device carries out dynamic mapping for equipment adjoining;Equipment for mapping can not be confirmed by numbering, by having mapped On equipment carry out intelligent Matching;
Mapped by impedance ratio;For double-circuit line mapping, due to cannot accurately map, online off-line data source need to be passed through Damping ratio is compared confirmation;
3)According to communication gear and equipment etc. value attribute realize equivalent equipment and the complex mappings of equivalent network;Due to offline number According to it is inconsistent in line computation data modeling, in some cases, not yet modeled in line computation data;It is real in the case of other There is the plant stand put into operation in advance in border system, have detailed plant stand modeling in line computation data, and off-line data is relatively simple It is single;In the case where this kind of on-line/off-line data are inconsistent, it is necessary to set up the mapping relations of complexity, it is ensured that equivalent equipment, equivalence The online measuring of power network can obtain accurate, complete embodiment in tideway integrating;
(3), static security analysis
According to given electric network composition, parameter and generator, the service condition of load cell and given excision scheme, it is determined that cutting Except whether some elements jeopardize the safety of system;
The major function of static security analysis includes:
It may be selected to carry out the whole network, the N-1 calculating of certain regional network or certain voltage class net, and the calculating to specified excision scheme;
The given of scheme information is cut off, a scheme is some element in AC line, transformer, generator or load, or Any combination of plurality of element;
Based on Load flow calculation, its master data includes total data and generator and its portion of speed regulator for being based on trend Divided data;
As a result the content and form exported is varied;The much information of each excision scheme can be exported respectively, also can be to institute There is excision scheme to make various forms of statistics outputs;
Computational methods support PQ decomposition methods, Newton method, optimal multiplier method, Newton method, PQ are decomposed to turn Newton method;
Static security analysis is calculated and is optimized in terms of power flow algorithm, and optimization method is as follows:
Factor table local correction technology:
When electric power networks structure or parameter changes locally, it is poorly efficient to re-establish network equation and solve again, using net Network equation amendment solution, only calculates the part changed, can greatly improve speed;
Dynamic network wiring analysis technology
The topological structure of branch breaking or input and power network changes, and the number of electrical island may be made to change, power The scope of reallocation also respective change;Network connection analysis method need to be used to practical static security analysis system;
When the network after to change carries out wiring analysis, the calculating time is reduced by the scope of restriction analysis, while in analysis In make full use of the wiring analysis achievement before change, using the topological main table and supplementary table set up under ground state trend, just for therefore Power network changing unit carries out dynamic network wiring analysis after barrier, can be greatly enhanced wiring analysis speed.
(4), stability control strategy checks online
The main check for realizing stability control device strategy, system automatic data collection peace is real-time from the running status, information and EMS of device Data, and real-time stabilization of power grids calculating data file, forecast failure collection, plant failure having stable behavior card are generated, it is steady with static state Setting analysis program, the scanning for carrying out the whole network failure is calculated;If a certain failure triggering device action, it will the action for including device is patrolled Volume carry out stabilization of power grids calculating, provide device action behavior and action after power grid heat stability level;If device correct operation, Still there is unstable situation in power network, and the strategy of stability control device there may be problem, need to analyze whether stability control strategy meets reality When mode under grid stability requirement, so as to analyze adaptation of the peace as power network second defence line from device strategy comprehensively Property.
The online check method step of stability control strategy is as follows:
Step one loads Operation of Electric Systems data, records the state quantity of the equipment related to stability control strategy.
Entry in step 2 traversal stability control strategy concordance list, according to service data, determines entry is included four one by one Whether class condition meets;According to the uniqueness principle of stability control strategy, once four class conditions are all met, then the match is successful for explanation, It need not search further for, go to step 3;
Stability control strategy uniqueness principle, it is determined that operation states of electric power system under, occur a certain failure when, stabilized control system have and Only one group matching steady control action, strategy containing attonity;
Step 3 if not finding matching strategy, occurs mismatch, needs timely early warning according to the matching result of step 2;If finding Corresponding steady control action, then added transient stability emulation, warning information provided if system unstability by matching strategy;
(5), assistant service decision-making
Assistant service decision-making is according to the peace control Policy model and the online check result of peace control having built up, with reference to current power network Actual operating mode, for all Safety systems and all peace control strategies, judges whether that meeting failure constraint, mode constrains and tide Constraints is flowed, if meeting condition, strategy, the parsings of implementation strategy and control measure, the amount of being controlled is controlled Distribution, until obtaining all control measure for meeting control requirement, provides security control device under current electric grid operating condition, sets Action decision recommendation under forecast failure.
Advantage and effect:
This electric power spot exchange Security Checking method based on cycle static analysis in 30 second of the present invention, with advantages below and has Beneficial effect:
The present invention improves lifting by being carried out to D5000 safety on line analytic function, carries out based on 30 second cycle static security point The electric power spot exchange Security Checking of analysis.The safety on line analysis ability of provincial power network can not only be improved, can also be successfully managed Abandon water under the new situation and abandon the transregional spot exchange of electric power that wind abandons light, rationally verification and the reliable submitting of examination & verification power network and it is reliable by Enter, safe and stable operation guarantee is provided for China's Power Market Development, realize the association that electric power netting safe running and market are operated in order Adjust unified.
Brief description of the drawings
Fig. 1 is dynamic device title mapping graph.
Fig. 2 is multi-source data mapping graph.
Fig. 3 is that peace control strategy checks schematic diagram.
Embodiment
The present invention is described further below in conjunction with the accompanying drawings:
D5000 is the intelligent grid supporting system technology basic platform of a new generation, has adapted to State Grid Corporation of China's " big fortune OK " in system Pyatyi scheduling controlling system requirement, realize " remotely have access to, alert direct transfer, lateral direction penetrating, vertical management " Function.D5000 systems are all merged each item datas such as operation plan, water situation, meteorological change, by scattered data It is integrated into a large database concept, power network can be comprehensively analyzed.
The present invention proposes the electric power spot exchange Security Checking method based on cycle static analysis in 30 second, and electric power first is adjusted Control center receives the spot exchange data that electricity transaction department sends and carries out safety on line analyze data preparation, in then regulating and controlling The heart carries out static security analysis, and finally regulation and control center provides trade center and surely controls check result and assistant service strategy online.
The electric power spot exchange Security Checking method based on cycle static analysis in 30 second, is comprised the following steps that:
(1), regulation and control center receive spot exchange data
In a few days market reopens after a cessation of business daily for area's spot exchange transprovincially, and tissue regenerative resource in a few days merchandise by increment, whole day point 0:15-8: 00,8:15-12:00,12:15-16:00,16:15-20:00,20:15-24:00 5 transaction sections(It is within 15 minutes a period) Reopened after a cessation of business within 2 hours before tissue, each transaction section.Proxima luce (prox. luc) 17:Before 00, sending end, which is saved, adjusts dispatching desk tissue renewable energy power generation inside the province Enterprise Application next day in a few days market bidding price(Five transaction sections, renewable energy power generation enterprise reports respectively in each transaction section One single price);Receiving end, which is saved, adjusts dispatching desk to declare next day in a few days day market competitive bidding valency(Five transaction sections, development of renewable energy Electric enterprise reports a single price respectively in each transaction section), all pricing informations are sealed in Guo Tiao centers transaction platform.
First 150 minutes of formal transaction, Guo Tiao centers verification closes on transaction section and send receiving end to purchase sale of electricity valency price differential and transregional passage Available transmission capacity, electricity price lattice or transregional passage are sold without available when receiving end saves tune and declares power purchase price and save tune less than sending end and declare During ability to transmit electricity, close on transaction section and do not reopen after a cessation of business.Preceding 120 minutes of formal transaction, such as close on transaction section and reopen after a cessation of business, and Guo Tiao centers, divides The heart readjusts the distribution that cloth is transregional, transprovincially passage available transmission capacity to province;Renewable energy power generation enterprise is according to the residue in trading session Generating capacity, declares the generating curve in a few days respectively closing on transaction section.Now, save adjust D5000 systems receiving countries adjust issue it is transregional, The transprovincially data message such as passage available transmission capacity, generating curve and quotation;
(2), static safety on line check data prepares
To realize using and splice in the automatic of line computation data for different control centres, it is necessary first to set up device name and its The automatic mapping of attribute.General principle is:According to on-line/off-line device name, annexation, numbering, component parameters and people The information such as work customization are formed dynamically various kinds of equipment mapping table, support reflecting between multi-to-multi mapping, support different type equipment Penetrate;
For transregional bulk power grid, because data coverage is wide, data volume is big, and corresponding relation is complicated, using Traditional Man The problem of method of maintenance is difficult to solve grid equipment dynamic mapping;According to the actual conditions and rule of power network, using following original The dynamic and intelligent mapping of grid equipment is then realized with method;
1)Using plant stand as the dynamic device mapping of basic mapping unit;In power network calculates data, plant stand is located at power network level knot Intermediate layer in structure, its quantity is relatively limited, and the plant stand mapping between different pieces of information is relatively easy to safeguard;Plant stand is formed simultaneously to reflect After penetrating, the formation of the grid equipment mapping of factory's inside/outside is greatly simplified;
2)The technology for being named as core with the standard of plant stand and equipment is used to realize dynamic mapping;
3)According to communication gear(Circuit or transformer)Equivalent equipment and the complexity of equivalent network are realized with the grade value attribute of equipment Mapping;Due to off-line data with it is inconsistent in line computation data modeling, under certain situation, there was only plant stand outlet in line computation data Equivalent measurement;In the case of other, there is the plant stand put into operation in advance in real system, have detailed plant stand in line computation data Modeling, and off-line data is relatively simple;In the case where this kind of on-line/off-line data are inconsistent, it is necessary to set up complexity Mapping relations, it is ensured that equivalent equipment, the online measuring of equivalent power network can obtain accurate, complete embodiment in tideway integrating; Mapping relations are as shown in Figure 1;
Under current power system running pattern, multi-source data is mainly made up of off-line data and online data;In line computation number According to the electric network composition, device parameter and operation information for mainly containing power system major network, certain can relatively accurately be described The running status of moment power system major network;Off-line data contains relatively complete typical electric network composition, and grid equipment Model and parameter data, can be adapted in detail, in depth analyze power network physical characteristic;It can be seen that, power network in line computation Data and off-line data are the descriptions to same power system, but carrier due to modeling, purpose are different, and modeling process is relative The reason such as independent, forms two sets of data for describing power system from different perspectives;
According to the actual conditions and rule of power network, the basic skills of dynamic and intelligent mapping policy is proposed:
1)Using plant stand as the dynamic device mapping of basic mapping unit;In power network calculates data, plant stand is located at power network level knot Intermediate layer in structure, its quantity is relatively limited, and the plant stand mapping between different pieces of information is relatively easy to safeguard;Plant stand is formed simultaneously to reflect After penetrating, the formation of the grid equipment mapping of factory's inside/outside is greatly simplified;
2)The technology for being named as core with the standard of plant stand and equipment is used to realize dynamic mapping;Mainly from plant stand title, equipment Title etc. carries out dynamic mapping;With reference to following rule:
Plant stand title is same or similar.It is current online main using scheduling name, and off-line data occupation mode is named, for two Plant numerical nomenclature form and find that two kinds of plant stands are substantially similar, such as dispatch entitled state and adjust Three Gorges left banks power plant, offline entitled Hubei Province Three Gorges It is left.
Device name sequence number is same or similar.The equipment of dispatch name and offline title(Generator, three winding etc.)Numbering Basically identical, such as state adjusts Three Gorges left banks .#1 power plant of power plant and left No. #1 of Hubei Province Three Gorges;
Mapped device carries out dynamic mapping for equipment adjoining;Equipment for mapping can not be confirmed by numbering, by having mapped On equipment carry out intelligent Matching;
Mapped by impedance ratio;For double-circuit line mapping, due to cannot accurately map, online off-line data source need to be passed through Damping ratio is compared confirmation;
3)According to communication gear(Circuit or transformer)Equivalent equipment and the complexity of equivalent network are realized with the grade value attribute of equipment Mapping;Due to off-line data with it is inconsistent in line computation data modeling, in some cases, not yet modeled in line computation data; In the case of other, there is the plant stand put into operation in advance in real system, have detailed plant stand modeling in line computation data, and offline Data are relatively simple;In the case where this kind of on-line/off-line data are inconsistent, it is necessary to set up the mapping relations of complexity, protect The equivalent equipment of card, the online measuring of equivalent power network can obtain accurate, complete embodiment in tideway integrating;Multi-source data maps As shown in Figure 2;
(3), static security analysis
Static security analysis is according to the service condition of element such as given electric network composition, parameter and generator, load and given Excision scheme, it is determined that cutting off the safety whether some elements jeopardize system(Whether all busbar voltages are allowing i.e. in system In the range of, in allowed limits whether all generators exert oneself in system, in system all circuits, transformer whether mistake Carry etc.);
The major function of static security analysis includes:
It may be selected to carry out the whole network, the N-1 calculating of certain regional network or certain voltage class net, and the calculating to specified excision scheme;
Cut off scheme information it is given simply, conveniently, flexibly, a scheme can be AC line, transformer, generator or load In some element or plurality of element any combination;
Based on Load flow calculation, its master data includes total data and generator and its portion of speed regulator for being based on trend Divided data;
As a result the content and form exported is varied;The much information of each excision scheme can be exported respectively(Such as various things More limit information etc. of reason amount), can also make various forms of statistics to all excision schemes(Such as can be by a physical quantity, a model Enclose, a bus, an AC line or a transformer)Output;
Computational methods support PQ decomposition methods, Newton method(Power formula), optimal multiplier method(Nonlinear Programming Method), Newton method(Electric current Formula), PQ decompose turn Newton method etc.;
Compared with traditional static security analysis, the static security analysis calculating in the present invention has carried out excellent in terms of power flow algorithm Change, be mainly reflected in the following two kinds key technology:
Factor table local correction technology.
When electric power networks structure or parameter changes locally, it is poorly efficient to re-establish network equation and solve again, is adopted With network equation amendment solution, the part changed is only calculated, speed can be greatly improved.Conventional revised law one kind is compensation Method, another is factor table correction algorithm.Factor table correction algorithm includes the amendment of the order factor and local factors are decomposed again.Factor table Correction algorithm is particularly suitable for use in the tidal current analysis after permanent occasion during network change, such as failure.Factor table correction algorithm Sparse spike technology can be utilized, therefore amount of calculation is fairly small.Situation to needing to be applied multiple times network change postfactor table, because Sublist correction algorithm can obtain new factor table.When network change causes network equation order to change, also there is corresponding place Reason method, and can greatly improve technical speed using sparse spike technology, the static state under complex fault can be applied to Safety analysis.
Dynamic network wiring analysis technology
The topological structure of branch breaking or input and power network changes, and the number of electrical island may be made to change, power The scope of reallocation also respective change.Thus network connection analysis is essential to practical static security analysis system.
With power network popularization, one time static security analysis needs the number of defects to be processed huge, corresponding network wiring The number of times of analysis also increases.The used time for reducing this part is more and more important to the overall rate of raising static security analysis.It is conventional Network connection analysis method can be divided into 2 major classes:1)Method based on adjacency matrix and involution matrix;2)Side based on graph search Method, including depth-first and breadth First.1st class method speed is slower, is unsuitable for static security analysis;2nd class method is Develop the local topology method that topological analysis is locally carried out just for the power network comprising changing unit.Network after to change When carrying out wiring analysis, the calculating time is reduced by the scope of restriction analysis, while making full use of connecing before change in analysis Line analysis achievement, using the topological main table and supplementary table set up under ground state trend, is carried out just for power network changing unit after failure Dynamic network wiring analysis, can be greatly enhanced wiring analysis speed.
(4), stability control strategy checks online
The function mainly realizes the check of stability control device strategy, system automatic data collection peace from the running status of device, information and EMS real time datas, and real-time stabilization of power grids calculating data file, forecast failure collection, plant failure having stable behavior card are generated, use Static stability analysis program, the scanning for carrying out the whole network failure is calculated.If a certain failure triggering device action, it will include device Action logic carry out stabilization of power grids calculating, provide device action behavior and action after power grid heat stability level.If device is just Positive motion is made, and unstable situation still occurs in power network, and the strategy of stability control device there may be problem, whether need to analyze stability control strategy The requirement of the grid stability under real-time mode is met, so as to analyze peace as power network second defence line comprehensively from device strategy Adaptability.
The online check method key step of stability control strategy is as follows:
Step one loads Operation of Electric Systems data, records the state quantity of the equipment related to stability control strategy.
Entry in step 2 traversal stability control strategy concordance list, according to service data, determines entry is included four one by one Whether class condition meets.According to the uniqueness principle of stability control strategy, once four class conditions are all met, then the match is successful for explanation, It need not search further for, go to step 3.
Stability control strategy uniqueness principle, it is determined that operation states of electric power system under, occur a certain failure when, stabilized control system Have and steady control that only one group matching action(Strategy containing attonity).
Step 3 if not finding matching strategy, occurs mismatch, needs timely early warning according to the matching result of step 2;If Matching strategy is found, then corresponding steady control action is added transient stability emulation, warning information is provided if system unstability.Peace It is as shown in Figure 3 that control strategy checks principle.
(5), assistant service decision-making
Assistant service decision-making is according to the peace control Policy model and the online check result of peace control having built up, with reference to current power network Actual operating mode, for all Safety systems and all peace control strategies, judges whether that meeting failure constraint, mode constrains and tide The constraintss such as stream constraint, if meeting condition, are controlled the parsing of strategy, implementation strategy and control measure, are controlled The distribution of amount processed, until obtaining all control measure for meeting control requirement, provides security control device in current electric grid operating condition Under, the action decision recommendation under setting forecast failure.

Claims (3)

1. the electric power spot exchange Security Checking method based on cycle static analysis in 30 second, it is characterised in that:Power regulation first Center receives the spot exchange data that electricity transaction department sends and carries out safety on line analyze data preparation, then regulates and controls center Static security analysis is carried out, finally regulation and control center provides trade center and surely controls check result and assistant service strategy online.
2. the electric power spot exchange Security Checking method according to claim 1 based on cycle static analysis in 30 second, it is special Levy and be:Comprise the following steps that:
(1), regulation and control center receive spot exchange data
In a few days market reopens after a cessation of business daily for area's spot exchange transprovincially, tissue regenerative resource in a few days increment merchandise, 15 minutes be one when Section, whole day point 0:15-8:00,8:15-12:00,12:15-16:00,16:15-20:00,20:15-24:00 5 transaction section groups Knit, reopened after a cessation of business within 2 hours before each transaction section;Proxima luce (prox. luc) 17:Before 00, sending end, which is saved, adjusts dispatching desk tissue renewable energy power generation enterprise inside the province Industry declares next day in a few days market bidding price, and five transaction sections, renewable energy power generation enterprise reports one respectively in each transaction section Individual single price;Receiving end, which is saved, adjusts dispatching desk to declare next day in a few days day market competitive bidding valency, five transaction sections, renewable energy power generation enterprise Industry reports a single price respectively in each transaction section, and all pricing informations are sealed in Guo Tiao centers transaction platform;
First 150 minutes of formal transaction, Guo Tiao centers verification closes on transaction section and send receiving end purchase sale of electricity valency price differential and transregional passage available Ability to transmit electricity, sells electricity price lattice or transregional passage and can not use transmission of electricity when receiving end saves tune and declares power purchase price and save tune less than sending end and declare During ability, close on transaction section and do not reopen after a cessation of business;Preceding 120 minutes of formal transaction, such as closes on section of merchandising and reopens after a cessation of business, Guo Tiao centers, branch center to Province readjusts the distribution that cloth is transregional, transprovincially passage available transmission capacity;Renewable energy power generation enterprise generates electricity according to the residue in trading session Ability, declares the generating curve in a few days respectively closing on transaction section;Now, save and adjust D5000 systems receiving countries to adjust issue transregional, transprovincially The data messages such as passage available transmission capacity, generating curve and quotation;
(2), static safety on line check data prepares
To realize using and splice in the automatic of line computation data for different control centres, it is necessary first to set up device name and its The automatic mapping of attribute;General principle is:According to on-line/off-line device name, annexation, numbering, component parameters and people The information of work customization is formed dynamically various kinds of equipment mapping table, supports reflecting between multi-to-multi mapping, support different type equipment Penetrate;
Under current power system running pattern, multi-source data is mainly made up of off-line data and online data;In line computation number According to the electric network composition, device parameter and operation information for mainly containing power system major network, certain can relatively accurately be described The running status of moment power system major network;Off-line data contains relatively complete typical electric network composition, and grid equipment Model and parameter data, be adapted in detail, in depth analyze power network physical characteristic;Power network in line computation data and offline Data are the descriptions to same power system, but carrier due to modeling, purpose are different, and modeling process is relatively independent to wait former Cause, forms two sets of data for describing power system from different perspectives;
According to the actual conditions and rule of power network, the method for the dynamic and intelligent mapping policy of use is as follows:
1)Using plant stand as the dynamic device mapping of basic mapping unit;
2)The technology for being named as core with the standard of plant stand and equipment is used to realize dynamic mapping;Mainly from plant stand title, equipment Title carries out dynamic mapping;With reference to following rule:
Plant stand title is same or similar;It is current online main using scheduling name, and off-line data occupation mode is named;
Device name sequence number is same or similar;Dispatch name and the device numbering of offline title are basically identical;
Mapped device carries out dynamic mapping for equipment adjoining;Equipment for mapping can not be confirmed by numbering, by having mapped On equipment carry out intelligent Matching;
Mapped by impedance ratio;For double-circuit line mapping, due to cannot accurately map, online off-line data source need to be passed through Damping ratio is compared confirmation;
3)According to communication gear and equipment etc. value attribute realize equivalent equipment and the complex mappings of equivalent network;Due to offline number According to it is inconsistent in line computation data modeling, in some cases, not yet modeled in line computation data;It is real in the case of other There is the plant stand put into operation in advance in border system, have detailed plant stand modeling in line computation data, and off-line data is relatively simple It is single;In the case where this kind of on-line/off-line data are inconsistent, it is necessary to set up the mapping relations of complexity, it is ensured that equivalent equipment, equivalence The online measuring of power network can obtain accurate, complete embodiment in tideway integrating;
(3), static security analysis
According to given electric network composition, parameter and generator, the service condition of load cell and given excision scheme, it is determined that cutting Except whether some elements jeopardize the safety of system;
The major function of static security analysis includes:
It may be selected to carry out the whole network, the N-1 calculating of certain regional network or certain voltage class net, and the calculating to specified excision scheme;
The given of scheme information is cut off, a scheme is some element in AC line, transformer, generator or load, or Any combination of plurality of element;
Based on Load flow calculation, its master data includes total data and generator and its portion of speed regulator for being based on trend Divided data;
As a result the content and form exported is varied;The much information of each excision scheme can be exported respectively, also can be to institute There is excision scheme to make various forms of statistics outputs;
Computational methods support PQ decomposition methods, Newton method, optimal multiplier method, Newton method, PQ are decomposed to turn Newton method;
Static security analysis is calculated and is optimized in terms of power flow algorithm, and optimization method is as follows:
Factor table local correction technology:
When electric power networks structure or parameter changes locally, it is poorly efficient to re-establish network equation and solve again, using net Network equation amendment solution, only calculates the part changed, can greatly improve speed;
Dynamic network wiring analysis technology
The topological structure of branch breaking or input and power network changes, and the number of electrical island may be made to change, power The scope of reallocation also respective change;Network connection analysis method need to be used to practical static security analysis system;
When the network after to change carries out wiring analysis, the calculating time is reduced by the scope of restriction analysis, while in analysis In make full use of the wiring analysis achievement before change, using the topological main table and supplementary table set up under ground state trend, just for therefore Power network changing unit carries out dynamic network wiring analysis after barrier, can be greatly enhanced wiring analysis speed;
(4), stability control strategy checks online
The main check for realizing stability control device strategy, system automatic data collection peace is real-time from the running status, information and EMS of device Data, and real-time stabilization of power grids calculating data file, forecast failure collection, plant failure having stable behavior card are generated, it is steady with static state Setting analysis program, the scanning for carrying out the whole network failure is calculated;If a certain failure triggering device action, it will the action for including device is patrolled Volume carry out stabilization of power grids calculating, provide device action behavior and action after power grid heat stability level;If device correct operation, Still there is unstable situation in power network, and the strategy of stability control device there may be problem, need to analyze whether stability control strategy meets reality When mode under grid stability requirement, so as to analyze adaptation of the peace as power network second defence line from device strategy comprehensively Property;
(5), assistant service decision-making
Assistant service decision-making is according to the peace control Policy model and the online check result of peace control having built up, with reference to current power network Actual operating mode, for all Safety systems and all peace control strategies, judges whether that meeting failure constraint, mode constrains and tide Constraints is flowed, if meeting condition, strategy, the parsings of implementation strategy and control measure, the amount of being controlled is controlled Distribution, until obtaining all control measure for meeting control requirement, provides security control device under current electric grid operating condition, sets Action decision recommendation under forecast failure.
3. the electric power spot exchange Security Checking method based on cycle static analysis in 30 second, its feature according to claim 2 It is:Step(4)In, the online check method step of stability control strategy is as follows:
Step one loads Operation of Electric Systems data, records the state quantity of the equipment related to stability control strategy;
Entry in step 2 traversal stability control strategy concordance list, according to service data, determines the four class bars that entry is included one by one Whether part meets;According to the uniqueness principle of stability control strategy, once four class conditions are all met, then the match is successful for explanation, without Search further for, go to step 3;
Stability control strategy uniqueness principle, it is determined that operation states of electric power system under, occur a certain failure when, stabilized control system have and Only one group matching steady control action, strategy containing attonity;
Step 3 if not finding matching strategy, occurs mismatch, needs timely early warning according to the matching result of step 2;If finding Corresponding steady control action, then added transient stability emulation, warning information provided if system unstability by matching strategy.
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